We must remember always that accusation is not proof, and that conviction depends upon evidence and due process of law. We will not walk in fear - one, of another. We will not be driven by fear into an age of un-reason, if we dig deep in our history and our doctrine, and remember that we are not descended from fearful men; Not from men who feared to write, to speak, to associate, and to defend causes that were - for the moment - unpopular.
RE: Sendmail as SMTP AUTH client for ISP mail server relay
Rather than running m4 and makemap manually, the more standard approach is to edit the Makefile in /etc/mail. Look for the line that looks like this:
all: ${CFFILES} ${POSSIBLE} virtusertable.db access.db domaintable.db mailertable.db
and add authinfo.db to the end of it.
After doing that, just type
make
in that directory and you'll get everything rebuilt automatically.